At one point, the Red Skull and his allies took over Doctor Doom's Castle taking advantage of Doom's temporary vacation. When Doom returned, the Skull and his allies turned Doom's weapons against him. The Skull personally manned the rocket gun and shot the rocket to Doom. This was enough to stun Doom enough time to tie him. Of course, Doom released himself soon afterward.
Probably Doctor Doom improved his armor soon afterward to prevent the Chemi-Sleep Gas to affect him again, but this is unconfirmed.
- 1 Appearances of Chemi-Sleep Gas
- Minor Appearances of Chemi-Sleep Gas
- Media Chemi-Sleep Gas was Mentioned in
- 1 Images featuring Chemi-Sleep Gas
- Item Gallery: Chemi-Sleep Gas